Net Core Web App Exiting with no reason and no error

I got c# project made with .net boilerplate framework so I'm trying to run it.Its builds ok, showing cmd window with message Application shutting down then some db info messages then Aplication Started adress and in then end The program '[pid] name.exe' has exited with code 0 (0x0).

My OS is W7, ide is VS2019.Project is on core 3.1.I have installed 5 and 3.1 too.